package com.dlxj.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts2.ServletActionContext;

public class UserSessionFilter implements Filter {

	@Override
	public void destroy() {
		// TODO Auto-generated method stub

	}

	@Override
	public void doFilter(ServletRequest arg0, ServletResponse arg1,
			FilterChain arg2) throws IOException, ServletException {
		arg0.setCharacterEncoding("utf-8");

		HttpServletRequest request = (HttpServletRequest) arg0;

		HttpServletResponse response = (HttpServletResponse) arg1;

		if (!request.getRequestURI().endsWith("login.html")
				&& request.getSession().getAttribute("user") == null) {
			response.getWriter()
					.print("<script>window.parent.frames.location.href=\"login.html\"</script>");
		} else {
			arg2.doFilter(arg0, arg1);
		}

	}

	@Override
	public void init(FilterConfig arg0) throws ServletException {
		// TODO Auto-generated method stub

	}

}
